We should not ____ litter ____in the park.

We should not ____ litter ____in the park. Our teachers ask us ( ) (not litter) on the ground.We should The sign means we should not (litter/littering)应该选什么? we should not litter on the grass改为祈使句怎么改 You should ____,if you find litter on the floor. not zoo people litter in should the 连词成句 not should throw we park the waste in连词成句 We should park cars in the street ____ ____ ____in the room we'll go to the park if it ____ (not rain )tomorrow We must not leave rubbish in the park.(保持原句意思不变） ____ _____ 我在公园里独自走了一会 I ___ ___ ____ ____in the park alone